The root of all things is a mindset where your success & failure are both born.
First thing first, if you want to change(physically, financially, spiritually), you have to completely kill your older version for the better (everything from now on you do with a professional & serious attitude, from brushing to going to bed). There is no other way.
De-clutter all things in every aspect of your life, from every useless thought, invaluable opinion, things that waste your time, things that make you bitch, things that hold you back, to useless knowledge, to every time-sucking person, unused clothes, useless apps, useless books, useless gadgets everything. Destroy them, sell them & get rid of them.
Everything you do or cannot do is the byproduct of your mindset. A mindset where mostly all things have stored from painful events to regretful pasts, terrible mistakes, bad habits, old self, ego, negative emotions, wrong mindset, you name it -probably have it.
Delete it, kill it, forget it ...
To get rid of this old programming write your autobiography, write everything, don't alter the details, write with your heart - pause often and reflect on mistakes.
If your old self is right, then why you are not successful? If your old thinking habits are good, and your mental models are better, then why don't you make it? Something needs to be changed from beginning to end seriously. I'm not kidding. You have to be serious about things that change your life. My old self had all thought, no action, all fantasy, no reality, all talk, no walk. My new self is doing the opposite. I want to go too far to catch.
For those things, you have to regenerate your new mindset, create & gain knowledge every day, always read winners, get advice from them, their thought pattern, habits, their positive mindset, everything consistently, and compound interest is taking care of rest of the things. Don't consume junk things( knowledge of food, you already know it!)
only focusing on #3 in life
1. health 2. career/study 3. you wish
Remember -always woe is YOU; Kill your competition every single day; never have zero days. Use your KPI (key performance indicator / if u want to lose weight, your weight is KPI) to analyze your performance on various matters.
Reading different types of books can shorten any learning curve. Make reading a habit it grows you exponentially.
Avoid the sunk cost fallacy. What you did in the past is now past; never regret the things you can not control, and believe in god; god always wants you to be successful, control what you can control, and change what you can change. The rest of all is God's domain.
Now take a deep breath. You have a new life, new chance, and new opportunity grab them.